* {
  margin: 0;
  padding: 0;
}

.nav-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 60px;
  line-height: 60px;
}

.left,.right {
  width: 60px;
  background-color: rgb(255, 0, 0);
}

.center {
  flex: 1;
  background-color:rgb(5, 72, 148);
}
